Territory



-(No Modl.)

vC. 1v1. STOLLE.

AMALGAMATOR.

Patented' Aung. 30.1887.,

' ATTORNEYS.

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i UNITED STATES VPrirlssrr OFFICE.

CARL M. STOLLE, OF BELLEVUE, IDAHO TERRITORY.

AMALGAMATOR.

SPECIFICATION forming part of Letters Patent No. 369,135, dated August30, 1887.

Application filed March 4, 1887. Serial No. 229,699. (No model.)

is a full, clear, and exact description.

The object of my invention is to provide a new and improved amalgamatorwhich is simple and durable in construction and very effective inoperation.

The invention consists in the construction and arrangement of variousparts and details and combinations of the same, as will be fullydescribed hereinafter, and then pointed out in the clainls.

Reference is to be had drawings, forming a part of this specification,in which similar letters of reference lindicate corresponding 4parts inall the figures.

Figure l is a perspective view of my imto the accompanying provementwith one -of the amalgamatingplates removed from the top cylinder. Fig.2 is a vertical cross-section of part of the cylinder, showing thefastening of one of the amalgamatingplates. Fig. 3 is a similar view ofthe same, showing the construction of the frame supporting the saidplates; and Fig. 4 is a similar View of the same, showing the frame andthe said plates.

On suitablyconstructed standards, A and A', is mounted the hollow shaftB, provided with the perforations B', and supporting theamalgamating-cylinder C, which is smaller in diameter at one end than atthe other, and in this smaller end opens the sluice or chute D. Theother larger end of the cylinder G opens into the casing E, supported bytherstandard l A, and provided with the downwardly-eX.-

tending chute E', the lower bentend of which opens into the secondamalgamating-cylinder, F, supported on the .shaft G, mounted in thestandards A and A and provided with the pulley H, connected by the beltI with the pulley J, secured on the shaft B, which is also provided withthe usual fast and loose pulleys for revolvinglthe said shaft. One endof the cylinder F, into which opens the said chute E', is slightlysmaller in diameter than its other end, which opens into the casing K,having the downwardly-extending chute K', which opens upon thetailings-box L.

The cylinders C and F are preferably hexagonal in'crosssection, and asthey are alike in construction itsuflices to describe one. On the shaftsB and G, respectively between the standards A and A/ and suitabledistances apart, are placed the hubs N, on which are secured the spokesO, on the outer ends of which are secured, by means of angle-irons andbolts or rivets, the wooden frames P, provided with external grooves, P,in whi'ch'are placed the copper plates Q, amalgamated on their innerfaces, and held in place on the said frames l? by latches R, whichpermit of removing the plates for cleaning or other purposes.

The spokes at the small ends of the cylinders C and F are inclinedinward, so as to permit of extending the ends of the respective chutes Dand E into the respective cylinder C or F. To one outer end of the shaftB is coupled the water supply pipe S, provided with a valve or cock, T,for regulating the passage of the Water through the perforations B inthe shaft B into the interior of the cylinder C.

The operation is as follows: The cylinders C and F are set in motionsimultaneously, and then the pulp or gold-sand is-introduced into thecylinder F at its small end by the chute D. The rotation of thecylinderF agitates the pulp or sand and causes the heavier particles ofgold to separate from the pulp, the said particles being thrown bycentrifugal force against the amalgamated surfaces of the copper platesQnvhich thus retain thegold firmly. The pulp passes toward the largerend of the cylinder C,

and isfinally discharged into thecasing E,which delivers it to thesecond cylinder, F, in which the above-described operation isrepeated,and all the remaining particles of gold are absorbed by theamalgamated plates Q before reaching the larger end of the cylinder F.The tailings are discharged from this larger end of the cylinder F intothe tailings-box L. In case the pulp entering by the chute D is thick,then the operator opens the valve T and admits water through theperforations B into the cylinder C, thus thinning the pulp. The valve isalso opened to admit water into the cylinder Fwhen the supply ofpulpceases and the operator desires to clean the cylinders C and F. Thewater then Washes the remaining pulp out of the cylinders, the rotationof which is now stopped, and the amalgamated plates Qare removed andtreated in the usual manner to obtain the gold. The last set of aural# fgamated plates Q, near the easing@ in the cyl :inder C, are amalgamatedonly throughout onehalf their length, so as to catch all the amal- 5gain which may become loosened f rom the preceding plates.

For certain kinds of pnlp it is only neces sary to run it through theupper cylinder, C, and in this ease I may entirely dispense with thelower cylinder, F, and its connections.

To further define my yinvention and distinguish it from others in thesaine general class, I will state that the tapering shape of thesocallcd cylinders77 facilitates the passage of I5 the tailings from oneend to the other, and that their polygonal form causes the tailings tohe thrown from one plane surface or plate onto another with a. forcewhich promotes separation of the gold and its adherence to the saidplates.

Having thus fully described my invention, I claim as new and desire tosecure by Letters Patent- 1. In an anialgainator,tl1e combinatiolnwith dashaft, a cylindersnpported on the said shaft, said cylinder' being ofpolygonal shape, tapering from one end to the other, and provided withremovable :nnalgamating plates, of a easing, into which opens the largeend of the said cylinder, a chute extending downward from the saidcasing., and a second amalgamating-cylinder of polygonal shape taperingfrom one end to the other, and into the smaller end of which opens thesaid chate, substan- 55 tially as shown and described.

Y2. In an ainalgainator, a hollow perforated shaft, a cylinder supportedon the said shaft and being polygonal in shape, tapering from one end tothe other, and provided with'removable amalgainating-plates, incombination with a casing, into which opens the larger end of the saidcylinder, a chute extending from the said easing, a secondanialgamating-cylinder of polygonal shape, tapering from one end to theother, and provided with straight 45 removable amalgamating-plates, anda shaft supporting the said cylinder and` operated from the perforatedshaft by suitable means, substantially as shown and described.

3. In an ainalgalnator, a hollow perforated shaft, a water-supply pipeconnected with the said shaft, a cylinder supported on the said shaftand being of polygonal shape, tapering from one open end to the other,and provided with straightreinovable amalgamating-plates, 5 incombination with a easing, into which opens the large end of the saidcylinder, a chute extending downward from the said casing, a secondamalgamating-cylinder of polygonal shape,tapering from one open end tothe other, and provided with straight removable amalgamating-plates, ashaft supporting the said cylinder, means, as described, for revolvingthe said shaft from the said hollow shaft, and a casing having a chute,and into which opens the large end o l' the said second am al gamatin gcylinder, substantially as shown and described.

(l ARL M. STOLLE.

Witnesses:

Farmers .l1 F. ltnicirnnr, i WILLIAM Wanna. l

